QUESTION 8 Find P(-9
Q: a. What is the probability that the sample mean will be within +/- 4 of the population mean (to 4…
A: Given Data Population Mean,μ = 200.0 Population Standard Deviation,σ = 90.0 sample…
Q: mean = 50 standard deviation=6 p(48<X<70)
A: Mean = 50 Standard deviation = 6
Q: • Describe how the values of u and o affect the graph of the normal distribution.
A: It is required to complete the characteristics of normal distribution functions. It is asked to find…
Q: You have a sample of test scores, the sample mean of the test scores is 70.5, and the standard…
A: Determine the z-score for an individual score of 85. The z-score for an individual score of 85 is…
Q: the scores on a test have a normal distribution with mean score 70 and standard deviation 10 for a…
A: Solution: Let X be the score on a test. From the given information, X follows normal distribution…
Q: Answer true or false. If false, explain why. Suppose that X1, X2, . . . , Xn is a random sample from…
A:
Q: The combined SAT scores for the students at a local high school are normally distributed with a mean…
A: Given data, μ=1541σ=306P(X<1725)=?
Q: When you use the one-standard-deviation χ2-test or χ2-interval procedure, what assumption must be…
A: The assumption must be met by the variable under consideration when the one-standard-deviation…
Q: Twelve (n₁ = 12) randomly selected mature citrus trees of one variety have a mean height of I₁ =…
A: The question is about confidence interval.Given :Randomly selected no. of mature citrus trees of…
Q: Pressure values measured by various probes in the test section of a wind tunnel to obtain the…
A: Given information: The data represents the values of readings of 9 measurements.
Q: Suppose X is normally distributed with mean 3 and standard deviation 50. What is the destribution of…
A: The sample mean ,X, from a group of observations is an estimate of the population mean μ. Given a…
Q: · 6.3-5. Let Y₁ < Y2 < ... < Yg be the order statistics of eight independent observations from a…
A: Step 1: Binomial probability: P(X=k)=(kn)∗pk∗(1−p)n−k Step 2: π0.7=27.3n=8This represents that…
Q: For a binomial distribution with p=- and µ=- the standard deviation is
A:
Q: Assume that X is normally distributed with a meanof 10 and a standard deviation of 2. Determine…
A: Given: Formula:
Q: Body temperatures of adults are normally distributed with a mean of 98.60◦ F and a standard…
A: Given that body temperatures of adults are normally distributed with a mean of 98.60◦ F and a…
Q: Suppose that X is a normally distributed with mean 34 and standard deviation 12 Find the P(X>25)
A: Answer: From the given data, mean (μ) = 34 standard deviation(σ) = 12 X follows normal…
Q: A variable has a population mean of μl: = 100 and a population standard = 27. deviation of = The…
A: From the provided information,
Q: Suppose x has a distribution with a mean of 90 and a standard deviation of 27. Random samples of…
A: According to the provided information, Mean (μ) = 90 Standard Deviation (σ) = 27 Sample Size (n) =…
Q: Suppose the heights of men are normally distributed with mean, µµ = 70 inches, and standard…
A: Given information Population means µ = 70 inches Standard deviation σ = 4 inches We have to find the…
Q: Suppose the distribution of maximum monthly January temperatures in Canberra is normal with mean, μ…
A:
Q: Suppose that the heart beat per minute (bpm) of adult males has a normal distribution with a mean of…
A: Answer:- Let, X be a random variable represents the heart beat per minute (bpm) of adult males.…
Q: A population of values has a normal distribution with u random sample of size n = 86. 53.8 and o =…
A: The random variable X follows normal distribution. The population mean is 53.8. The population…
Q: P(x ≤ 16) when a variable is normally distributed with mean 21 and standard deviation 7. Give the…
A: Given data,Mean μ=21sd σ=7P(X≤16)=?
Q: A normal distribution has a mean of μ= 54 and a standard deviation of σ=6 What is the probability of…
A: The sample size is, n = 36 The values of mean and standard deviation of the sampling distribution…
Q: Assume that z-scores are normally distr If P( – b < z < b) = 0.4488, find b.
A:
Q: The life of Sunshine CD players is normally distributed with mean of 5.6 years and a standard…
A: The life of Sunshine CD players is normally distributed with mean of 5.6 years and a standard…
Q: 2. The mean and standard deviation for any standard normal curve is and ,respectively* O 1 and 0 O…
A: Solution: 2. Let X be the normal distribution with mean µ and standard deviation σ.
Q: the mean age of a certa population. A sample of
A: As the population standard deviation is known, we will use z distribution. The formula to calculate…
Q: Suppose that x has a beta distribution with parameters a = 2.8 and B = 1. Determine to 4 decimal…
A:
Q: Assume that adults have IQ scores that are normally distributed with a mean of mu equals 100μ=100…
A: The probability that a randomly selected adult has in IQ between 84 and 116 is obtained below:Let X…
Q: Once an individual has been infected with a certain disease, let X represent the time (days) that…
A:
Q: Suppose that the TSH (Thyroid Stimulating exactly 95% of healthy individuals have TS your…
A: Mean=3.1 X=6.1 95%
Q: F(144) Generation Y has been defined as those individuals who were born between 1981 and 1991. A…
A: Population proportion : P=0.60 Sample size : n=190 Sample proportion : p p follows normal…
Q: The sample mean and standard deviation from a random sample of 29 observations from a normal…
A:
Q: normally distributed with 0 for the mean and 1 for the standard deviation, what is the probaility…
A: Use the standard normal table to find the required probability.
Q: A normal distribution has a mean of μ= 54 and a standard deviation of σ=6 What is the probability of…
A: A normal distribution has a mean of μ= 54 and a standard deviation of σ=6. Sample size, n = 4
Q: Suppose that the mean weight of a particular type of ripe tomato is 155 g, and the variance of the…
A: Consider that the mean and standard deviation of a random variable X are µ and σ, respectively.…
Q: Assume that the annual earnings of all employees with CPA certification and 6 years of experience…
A:
Q: normal distribution has a mean of u = 50 and 0 = 12 if one score is randomly selected for…
A:
Q: A population has a mean μ = 161 and a standard deviation o = 20. Find the mean and standard…
A: From the provided information,
Step by step
Solved in 2 steps
- Assume a variable is normally distributed with a mean of 30 and standard deviation of 6. P(x>32) = Round to three decimal places. NWhat is the variance and standard deviation for the number of times the SAT is taken? x Frequency (f) fx f*x2= (f*x) x (x) (4) = (3)x(1) 5152727-(2547473)(2547473)/1518859=880035.3688/1518859=0.5794 (1) (2) (3)=(1)x(2) (4)=(3x1) Population Variance 1 721,769 721,769 721,769 2 601,325 1,202,650 2,405,300 3 166,736 500,208 1,500,624 4 22,299 89,196 356,784 5 6,730 33,650 168,250 Total 1,518,859 2,547,473 5,152,727 880035.3688 0.5794 n=1,518,859 ∑fx = 2,547,473 The population variance is 0.5794 The Standard Deviation? 0.76 Can you show me the steps to reach the standard deviation of .76 ?The lifetime of a specific species of mammal is normally distributed with mean μ=22 years and standard deviation σ=4 years. We pick randomly a mammal from the above species. What is the probability the mammal lives: Less than 28years? Between 20 years and 28 years? Exactly 67% of the mammal of this species live at most y What is the value of y?
- Suppose that X is a normally distributed with mean 45 and standard deviation 12 Find the P(X>28)The lengths of pregnancies in a small rural village are normally distributed with a mean of 261 days and a standard deviation of 17 days. What percentage of pregnancies last fewer than 314 days? P(x < 314 days) = P(z<IQ is normally distributed with a mean of 100 and a standard deviation of 15. Suppose one individual is randomly chosen. Let X = IQ of an individual. (a) Find the z-score for an IQ of 99, rounded to three decimal places. (b) Find the probability that the person has an IQ greater than 99. (c) Shade the area corresponding to this probability in the graph below. (Hint: The x- axis is the z-score. Use your z-score from part (a), rounded to one decimal place). Shade: Left of a value -1 -1.5 0 +). Click and drag the arrows to adjust the values. 1 2 (d) MENSA is an organization whose members have the top 2% of all IQs. Find the minimum IQ needed to qualify for the MENSA organization. (e) Sketch the graph, and write the probability statement. Edit Insert Formats B I U x₂ x² A => EM e & N 18 (f) The middle 50% of IQs fall between what two values? (g) Sketch the graph and write the probability statement. Edit Insert Formats BIUX₂ X² A E = = E EC P R N • Σ+ Σ Α Σ+ Σ Α
- DCX Suppose that an airline quotes a flight time of 2 hours, 10 minutes between two cities. Furthermore, suppose that historical flight records indicate that the actual flight time between the two cities, x, is uniformly distributed between 2 hours and 2 hours, 20 minutes. Letting the time unit be one minute, (a) Calculate the mean flight time (x) and the standard deviation (ax) of the flight time. (Round your answers to 4 decimal places.) ux OX (b) Find the probability that the flight time will be within one standard deviation of the mean. (Round your answer to 5 decimal places.) P = 18 Fo MAR LO 5 li Ⓒ A WD ShowSuppose we have the short hand info on a Normal Distribution as N(10,25). What is the population mean of the distribution and what is the population standard deviation? μ = σ =A random variable X is normally distributed with mean 32 and standard deviation 8.2 Find the z score for an individual score x = 23 Round to 2 decimals
- A distribution of values is normal with a mean of 220 and a standard deviation of 8.Find the interval containing the middle-most 40% of scores: Incorrect Enter your answer using interval notation. Example: [2.1,5.6) Your numbers should be accurate to 1 decimal places. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.Suppose x has a distribution with a mean of 80 and a standard deviation of 45. Random samples of size n = 36 are drawn. Find P(x < 87.5) Please show the steps to finding the answer and use a ti-83+ calculator since this is what I am working with.Q13 b and c pls, thank you. Mean = 1/500 = 0.002var(x) = 1/500^2 = 0.000004
